The things you should know
How Often Should You Change Your Air Conditioner Filter?
There are some very important things that you should do to extend the life of your air conditioner and keep it working at peak efficiency at all times. One of the most important things that you can do is change your air conditioner or furnace filter every three to six months.
Every home is different and there are many factors that effect how long you should wait between filter changes. Wait too long and the efficiency of the equipment will deteriorate and operating costs go up.
It is important to keep in mind that the more efficient your air conditioner filter is the more often it will have to be cleaned or replaced.